DELTA 1 DEB, 42639

Orbit data source: Space-Track

DELTA 1 DEB, 42639 is space debris in SSO originally from a launch on Thu, 12 Jun 1975 UTC launched from the Air Force Western Test Range (AFWTR). Debris objects in space refer to the collection of defunct objects orbiting the Earth. Examples of debris include non-operational satellites, rocket bodies, and fragments generated from explosions, collisions, or faulty payload assembly.

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Iframe URL

https://www.satcat.com/sats-embedded/42639?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

42639, 1975-052LY

Orbit

SSO

Country

Related business

National Aeronautics and Space Administration (NASA) (US)

Manufacturer

Unknown

Mission

Spacecraft

Bus & Motor

Unknown

Mass

Unknown

Launch date (UTC)

1975-06-12 (51 years ago)

Launch vehicle

Unknown

Launch site

Air Force Western Test Range (AFWTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Unknown shape, 0.1 m

Radar Cross Section

Small (<0.1 m²)

Expand to show TLE details & history
Last TLE update: 6 days ago

TLE from 6 days ago

0 DELTA 1 DEB
1 42639U 75052LY  26167.75966720  .00000017  00000-0  11931-3 0  9993
2 42639  99.6953 348.7723 0071303  30.2199 349.5101 13.31693911610758

Epoch: 2026-06-16T18:13Z

TLE epoch observation values (Epoch: 2026-06-16T18:13:55.246Z)

Latitude

19.28966°

Longitude

166.85456°

Altitude

1,089.975 km

Speed

7.334 km/s

True Right ascension

23h 01m 26s

True Declination

19° 11' 15"

Sunlit

Object was in daylight at epoch

Visualization orbit readout

Latitude

Unknown

Longitude

Unknown

Altitude

Unknown

Speed

Unknown

Apparent Right ascension

Unknown

Apparent Declination

Unknown

Sunlit

N/A

Visualization observer readout

Local Sidereal Time

21:44:01

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,191.296 km

Perigee altitude

1,084.116 km

Semi-major axis

7,515.843 km

Eccentricity

0.00713

Inclination

99.6953°

RAAN

348.7723°

Arg. of periapsis

30.2199°

True anomaly

349.36003°

Mean anomaly

349.5101°

Eccentric anomaly

349.4352°

Mean motion

3.33102 °/min

Orbital period

108.08 mins

BSTAR

0.00011931

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Other satellites on launch #52 in the year 1975 (1975-06-12 UTC)

DELTA 1 DEB, 21518 (Decayed)

DELTA 1 DEB, 37628 (Decayed)

DELTA 1 DEB, 21349 (Decayed)

DELTA 1 DEB, 21328 (Decayed)

DELTA 1 DEB, 42658

DELTA 1 DEB, 26839

DELTA 1 DEB, 26036

DELTA 1 DEB, 21683 (Decayed)

DELTA 1 DEB, 21519 (Decayed)

DELTA 1 DEB, 21444

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DELTA 1 DEB Visibility forecast

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Span	Click to sort rows by Start time (UTC) header in descending order	Start Az.	Max El. time (UTC)	Max El. Az.	Max El.	End time (UTC)	End Az.
12 mins	2026-06-22 11:16:58.015Z	139.022° SSE	2026-06-22 11:22:58.015Z	69.817° E	36.664°	2026-06-22 11:28:58.015Z	357.554° N
9 mins	2026-06-22 13:05:58.015Z	218.46° SW	2026-06-22 13:09:58.015Z	267.402° W	25.316°	2026-06-22 13:14:58.015Z	320.195° NNW
11 mins	2026-06-23 00:24:58.015Z	32.811° NE	2026-06-23 00:29:58.015Z	107.161° ESE	37.402°	2026-06-23 00:35:58.015Z	172.913° S
9 mins	2026-06-23 02:11:58.015Z	344.366° N	2026-06-23 02:15:58.015Z	296.752° NW	27.345°	2026-06-23 02:20:58.015Z	243.355° WSW

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Co-orbital & Co-planar RSOs

Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions

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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings

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Check out DELTA 1 DEB, 42639 on other resources

View DELTA 1 DEB, 42639 on Heavens-Above

View DELTA 1 DEB, 42639 on Keep Track

View DELTA 1 DEB, 42639 on Celestrak

View DELTA 1 DEB, 42639 on Gunter's Space Page

Satcat and Kayhan Space are not affiliated with NASA, Celestrak, Heavens-Above, Keep Track, or Gunter's Space Page.

DELTA 1 DEB, 42639

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 6 days ago

TLE from 6 days ago

TLE epoch observation values (Epoch: 2026-06-16T18:13:55.246Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #52 in the year 1975 (1975-06-12 UTC)

DELTA 1 DEB Visibility forecast

Co-orbital & Co-planar RSOs

Check out DELTA 1 DEB, 42639 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 6 days ago